<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<script src="js/jquery.json.min.js" type="text/javascript" charset="utf-8"></script>
		<style type="text/css">
			.cls1{
				color: red;
			}
		</style>
	</head>
	<body>
		<div></div>
		<div>
			<p>aaaaaaaaaa</p>
		</div>
		<div></div>
		<button type="button">toggleClass</button>
		<script src="js/controller16-4.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>
